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Old 12-12-2010, 03:43 PM
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pmrid (Peter)
Ageing badly.

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Join Date: May 2008
Location: Cloudy, light-polluted Bribie Is.
Posts: 3,679
Quote:
Originally Posted by CometGuy View Post
I've been doing some reading and it seems Andrew and Marc are right. Apparently, light is reflected back from the corrector plate causing these ghosts. One thing that might be worth trying is to tilt the corrector plate slightly so that ghosts are outside the field - not sure what effect that will have on image quality though.

Anyway, here is the reflection I see in my hyperstar from Zeta Orionis.

Terry
Yep. Now it seems we need to find a way to make a defect into a virtue - Terry yours is nicely symmetrical - I wonder if there is any correlation with alignment/collimation.
Peter
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